Invention Application
WO2009111233A1 METHOD AND APPARATUS FOR ACCESSING A RANDOM ACCESS CHANNEL BY SELECTIVELY USING DEDICATED OR CONTENTION-BASED PREAMBLES DURING HANDOVER
审中-公开
在切换期间通过选择性地使用基于或内容的前缀来访问随机访问信道的方法和装置
- Patent Title: METHOD AND APPARATUS FOR ACCESSING A RANDOM ACCESS CHANNEL BY SELECTIVELY USING DEDICATED OR CONTENTION-BASED PREAMBLES DURING HANDOVER
- Patent Title (中): 在切换期间通过选择性地使用基于或内容的前缀来访问随机访问信道的方法和装置
-
Application No.: PCT/US2009/035081Application Date: 2009-02-25
-
Publication No.: WO2009111233A1Publication Date: 2009-09-11
- Inventor: ZHANG, Guodong , WANG, Jin
- Applicant: INTERDIGITAL PATENT HOLDINGS, INC. , ZHANG, Guodong , WANG, Jin
- Applicant Address: 3411 Silverside Road Concord Plaza, Suite 105 Hagley Building Wilmington, Delaware 19810 US
- Assignee: INTERDIGITAL PATENT HOLDINGS, INC.,ZHANG, Guodong,WANG, Jin
- Current Assignee: INTERDIGITAL PATENT HOLDINGS, INC.,ZHANG, Guodong,WANG, Jin
- Current Assignee Address: 3411 Silverside Road Concord Plaza, Suite 105 Hagley Building Wilmington, Delaware 19810 US
- Agency: WOLINSKY, Scott
- Priority: US61/033,676 20080304
- Main IPC: H04W74/08
- IPC: H04W74/08
Abstract:
A method and apparatus for accessing a random access channel (RACH) during handover are disclosed. A handover procedure is initiated and a maximum handover interruption timer is activated. A dedicated preamble is transmitted in an attempt to access the RACH on a condition that the dedicated preamble is reserved in a current random access opportunity and the maximum handover interruption timer has not expired. A contention-based preamble is transmitted in an attempt to access the RACH on a condition that a dedicated preamble is not reserved in a current random access opportunity. If the maximum handover interruption timer has expired, a contention-based preamble is transmitted in an attempt to access the RACH.
Information query
